Development of a logically devised line drawing atlas for grading of knee osteoarthritis

Y. Nagaosa, M. Mateus, B. Hassan, P. Lanyon, M. Doherty

Research output: Contribution to journalReview article

69 Citations (Scopus)

Abstract

Objectives - To (a) develop an atlas of line drawings for the assessment and grading of narrowing and osteophyte (that is changes of osteoarthritis) on knee radio-graphs, and (b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs. Methods - Normal joint space widths (grade 0) for the medial and lateral tibio-femoral and medial and lateral patello-femoral compartments were obtained from a previous community study. Grades 1-3 narrowing in each compartment was calculated separately for men and women grade 3 being bone on bone, grades 1 and 2 being two thirds and one third the value of grade 0. Maximum osteophyte size (grade 3) for each of eight sites was determined from 715 bilateral knee x ray films obtained in a knee osteoarthritis (OA) hospital clinic; grades 1-2 were calculated as two thirds and one third reductions in the area of grade 3. Drawings for narrowing and osteophyte were presented separately. 50 sets of bilateral knee x ray radiographs (standing, extended anteroposterior; flexed skyline) showing a spectrum of OA grades were scored by three observers, twice using the OARS atlas and twice using the drawn atlas. Results - Intraobserver and interobserver reproducibility was similar and generally good with both atlases, though varied according to site. All three observers preferred the line drawing atlas for ease and convenience of use. Higher scores for patellofemoral narrowing and lower scores for osteophyte, especially medial femoral osteophyte, were seen using the line drawing atlas, showing that the two atlases are not equivalent instruments. Conclusion - A logically derived line drawing atlas for grading of narrowing and osteophyte at the knee has been produced. The atlas showed comparable reproducibility with the OARS atlas, but was discordant in several aspects of grading. Such a system has several theoretical and practical advantages and should be considered for use in knee OA studies.

Original languageEnglish
Pages (from-to)587-595
Number of pages9
JournalAnnals of the Rheumatic Diseases
Volume59
Issue number8
DOIs
Publication statusPublished - 2000

Fingerprint

Knee Osteoarthritis
Atlases
Osteophyte
Bone
X rays
Osteoarthritis
Thigh
Knee
Research
X-Rays
Motion Pictures
Radio
Joints

ASJC Scopus subject areas

  • Rheumatology
  • Immunology

Cite this

Development of a logically devised line drawing atlas for grading of knee osteoarthritis. / Nagaosa, Y.; Mateus, M.; Hassan, B.; Lanyon, P.; Doherty, M.

In: Annals of the Rheumatic Diseases, Vol. 59, No. 8, 2000, p. 587-595.

Research output: Contribution to journalReview article

Nagaosa, Y. ; Mateus, M. ; Hassan, B. ; Lanyon, P. ; Doherty, M. / Development of a logically devised line drawing atlas for grading of knee osteoarthritis. In: Annals of the Rheumatic Diseases. 2000 ; Vol. 59, No. 8. pp. 587-595.
@article{6ce431a455c5443ba90e428cd616cfd3,
title = "Development of a logically devised line drawing atlas for grading of knee osteoarthritis",
abstract = "Objectives - To (a) develop an atlas of line drawings for the assessment and grading of narrowing and osteophyte (that is changes of osteoarthritis) on knee radio-graphs, and (b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs. Methods - Normal joint space widths (grade 0) for the medial and lateral tibio-femoral and medial and lateral patello-femoral compartments were obtained from a previous community study. Grades 1-3 narrowing in each compartment was calculated separately for men and women grade 3 being bone on bone, grades 1 and 2 being two thirds and one third the value of grade 0. Maximum osteophyte size (grade 3) for each of eight sites was determined from 715 bilateral knee x ray films obtained in a knee osteoarthritis (OA) hospital clinic; grades 1-2 were calculated as two thirds and one third reductions in the area of grade 3. Drawings for narrowing and osteophyte were presented separately. 50 sets of bilateral knee x ray radiographs (standing, extended anteroposterior; flexed skyline) showing a spectrum of OA grades were scored by three observers, twice using the OARS atlas and twice using the drawn atlas. Results - Intraobserver and interobserver reproducibility was similar and generally good with both atlases, though varied according to site. All three observers preferred the line drawing atlas for ease and convenience of use. Higher scores for patellofemoral narrowing and lower scores for osteophyte, especially medial femoral osteophyte, were seen using the line drawing atlas, showing that the two atlases are not equivalent instruments. Conclusion - A logically derived line drawing atlas for grading of narrowing and osteophyte at the knee has been produced. The atlas showed comparable reproducibility with the OARS atlas, but was discordant in several aspects of grading. Such a system has several theoretical and practical advantages and should be considered for use in knee OA studies.",
author = "Y. Nagaosa and M. Mateus and B. Hassan and P. Lanyon and M. Doherty",
year = "2000",
doi = "10.1136/ard.59.8.587",
language = "English",
volume = "59",
pages = "587--595",
journal = "Annals of the Rheumatic Diseases",
issn = "0003-4967",
publisher = "BMJ Publishing Group",
number = "8",

}

TY - JOUR

T1 - Development of a logically devised line drawing atlas for grading of knee osteoarthritis

AU - Nagaosa, Y.

AU - Mateus, M.

AU - Hassan, B.

AU - Lanyon, P.

AU - Doherty, M.

PY - 2000

Y1 - 2000

N2 - Objectives - To (a) develop an atlas of line drawings for the assessment and grading of narrowing and osteophyte (that is changes of osteoarthritis) on knee radio-graphs, and (b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs. Methods - Normal joint space widths (grade 0) for the medial and lateral tibio-femoral and medial and lateral patello-femoral compartments were obtained from a previous community study. Grades 1-3 narrowing in each compartment was calculated separately for men and women grade 3 being bone on bone, grades 1 and 2 being two thirds and one third the value of grade 0. Maximum osteophyte size (grade 3) for each of eight sites was determined from 715 bilateral knee x ray films obtained in a knee osteoarthritis (OA) hospital clinic; grades 1-2 were calculated as two thirds and one third reductions in the area of grade 3. Drawings for narrowing and osteophyte were presented separately. 50 sets of bilateral knee x ray radiographs (standing, extended anteroposterior; flexed skyline) showing a spectrum of OA grades were scored by three observers, twice using the OARS atlas and twice using the drawn atlas. Results - Intraobserver and interobserver reproducibility was similar and generally good with both atlases, though varied according to site. All three observers preferred the line drawing atlas for ease and convenience of use. Higher scores for patellofemoral narrowing and lower scores for osteophyte, especially medial femoral osteophyte, were seen using the line drawing atlas, showing that the two atlases are not equivalent instruments. Conclusion - A logically derived line drawing atlas for grading of narrowing and osteophyte at the knee has been produced. The atlas showed comparable reproducibility with the OARS atlas, but was discordant in several aspects of grading. Such a system has several theoretical and practical advantages and should be considered for use in knee OA studies.

AB - Objectives - To (a) develop an atlas of line drawings for the assessment and grading of narrowing and osteophyte (that is changes of osteoarthritis) on knee radio-graphs, and (b) compare the performance of this atlas with that of the standard Osteoarthritis Research Society (OARS) photographic atlas of radiographs. Methods - Normal joint space widths (grade 0) for the medial and lateral tibio-femoral and medial and lateral patello-femoral compartments were obtained from a previous community study. Grades 1-3 narrowing in each compartment was calculated separately for men and women grade 3 being bone on bone, grades 1 and 2 being two thirds and one third the value of grade 0. Maximum osteophyte size (grade 3) for each of eight sites was determined from 715 bilateral knee x ray films obtained in a knee osteoarthritis (OA) hospital clinic; grades 1-2 were calculated as two thirds and one third reductions in the area of grade 3. Drawings for narrowing and osteophyte were presented separately. 50 sets of bilateral knee x ray radiographs (standing, extended anteroposterior; flexed skyline) showing a spectrum of OA grades were scored by three observers, twice using the OARS atlas and twice using the drawn atlas. Results - Intraobserver and interobserver reproducibility was similar and generally good with both atlases, though varied according to site. All three observers preferred the line drawing atlas for ease and convenience of use. Higher scores for patellofemoral narrowing and lower scores for osteophyte, especially medial femoral osteophyte, were seen using the line drawing atlas, showing that the two atlases are not equivalent instruments. Conclusion - A logically derived line drawing atlas for grading of narrowing and osteophyte at the knee has been produced. The atlas showed comparable reproducibility with the OARS atlas, but was discordant in several aspects of grading. Such a system has several theoretical and practical advantages and should be considered for use in knee OA studies.

UR - http://www.scopus.com/inward/record.url?scp=0033856686&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033856686&partnerID=8YFLogxK

U2 - 10.1136/ard.59.8.587

DO - 10.1136/ard.59.8.587

M3 - Review article

VL - 59

SP - 587

EP - 595

JO - Annals of the Rheumatic Diseases

JF - Annals of the Rheumatic Diseases

SN - 0003-4967

IS - 8

ER -